[go: up one dir, main page]

WO2002002479A1 - Structure ceramique en nid d'abeille et procede de preparation associe - Google Patents

Structure ceramique en nid d'abeille et procede de preparation associe Download PDF

Info

Publication number
WO2002002479A1
WO2002002479A1 PCT/JP2001/005491 JP0105491W WO0202479A1 WO 2002002479 A1 WO2002002479 A1 WO 2002002479A1 JP 0105491 W JP0105491 W JP 0105491W WO 0202479 A1 WO0202479 A1 WO 0202479A1
Authority
WO
WIPO (PCT)
Prior art keywords
ceramic structure
honeycomb ceramic
honeycomb
partition wall
total area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2001/005491
Other languages
English (en)
Japanese (ja)
Inventor
Kazuhiko Kumazawa
Yasushi Noguchi
Hideaki Nishi
Hiroyuki Suenobu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to US10/312,140 priority Critical patent/US6818580B2/en
Priority to AU2001267828A priority patent/AU2001267828A1/en
Priority to DE60129815T priority patent/DE60129815T2/de
Priority to EP01945623A priority patent/EP1298112B1/fr
Publication of WO2002002479A1 publication Critical patent/WO2002002479A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
    • C04B35/195—Alkaline earth aluminosilicates, e.g. cordierite or anorthite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/62665—Flame, plasma or melting treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0006—Honeycomb structures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C04B2235/3218—Aluminium (oxy)hydroxides, e.g. boehmite, gibbsite, alumina sol
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3436—Alkaline earth metal silicates, e.g. barium silicate
    • C04B2235/3445—Magnesium silicates, e.g. forsterite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/05—Methods of making filter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/30—Exhaust treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149—Honeycomb-like

Definitions

  • the present invention relates to, for example, a honeycomb ceramic structure capable of obtaining high collection efficiency with low pressure loss and suitably used as a diesel particulate filter (DPF), and a method for producing the same. ⁇ .
  • a honeycomb ceramic structure capable of obtaining high collection efficiency with low pressure loss and suitably used as a diesel particulate filter (DPF), and a method for producing the same. ⁇ .
  • DPF diesel particulate filter
  • DPF diesel particulate filters
  • Japanese Patent Publication No. 9-1 7 7 5 7 3 discloses a honeycomb structure in which the porosity and the average pore diameter are increased and the pore distribution on the partition wall surface is specified.
  • Japanese Patent Publication No. 3293 discloses a honeycomb structure in which the partition wall thickness is reduced to a predetermined value or less and the porosity is increased.
  • Japanese Patent Publication No. 7-38930 discloses that a high porosity is obtained by using coarse particles of a predetermined amount or more in the cordierite-forming raw material as particles of both the bulk component and the sily component.
  • Japanese Patent No. 2726616 discloses a honeycomb structure having a high porosity and a defined pore distribution and surface roughness. I have.
  • the cordierite-forming raw material is made into coarse particles, and graphite, wood flour, a foaming agent, or the like is added as a pore-forming agent.
  • graphite, wood flour, a foaming agent, or the like is added as a pore-forming agent.
  • the dielectric constant of the molded body to which graphite is added decreases, and when the amount is large, it is difficult to perform uniform drying by dielectric drying or microwave drying.
  • the firing time of 800 to 100 ° C. is lengthened in the firing step, there is a problem that it is necessary to suppress rapid combustion of graphite.
  • the present inventor has conducted intensive studies in view of the above-mentioned conventional problems, and as a result, while increasing the porosity of the honeycomb structure to a predetermined value or more, the exhaust gas actually comes into contact with the honeycomb structure, and the honeycomb structure is present on the partition wall surface through which the exhaust gas passes. Focusing on the pore area of the partition wall, it was found that when the total area of the pores exposed on the partition wall surface was set to a predetermined value or more, the pressure loss was extremely low, and high collection efficiency could be achieved. It was done.
  • the chemical composition is S i 0 2 4 2 ⁇ 5 6 wt%, A 1 2 ⁇ 3 3 0-4 5 wt%, M g O 1 2 ⁇ 1 6 wt% than it crystalline phase
  • a honeycomb ceramic structure in which the total area of the pores exposed on the surface is 35% or more of the total area of the partition wall surface. ⁇
  • the total area of the pores exposed on the partition wall surface is preferably 40% or more of the total area of the partition wall surface, and the average pore diameter is preferably 15 to 25 zm.
  • the partition wall thickness is preferably 300 m or less.
  • the permeability is preferably 1.5 to 6 ⁇ m 2 .
  • the thermal expansion coefficient between 40 to 800 ° C is desirably less than 0. 5x 10- 6 / ° C.
  • the honeycomb ceramic structure of the present invention can be preferably used as a diesel particulate filler (DPF) for collecting particulates discharged from a diesel engine.
  • DPF diesel particulate filler
  • the crystal phase consists 12 to 16 by weight% MgO is composed mainly of cordierite, a porosity of 55-65%, an average pore diameter of 15
  • a method for manufacturing a honeycomb ceramic structure is provided.
  • the synthetic resin is preferably any one of polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), and phenolic resin, or a combination thereof. It is preferable that the average particle diameter of the talc raw material in the raw material for lighting is 50 m or less, and the average particle diameter of the silica raw material is 6 or less.
  • FIG. 1 shows an SEM photograph of a rib cross section of the honeycomb ceramic structure of Example 1.
  • FIG. 2 shows an SEM photograph of the partition wall surface (film surface) of the honeycomb ceramic structure of Example 1.
  • FIG. 3 shows an SEM photograph of a rib cross section of the honeycomb ceramic structure of Comparative Example 5.
  • FIG. 4 shows an SEM photograph of the partition wall surface (film surface) of the honeycomb ceramic structure of Comparative Example 5.
  • FIG. 5 is a graph showing the relationship between the weight loss rate (TG) and the calorific value (DTA) of Comparative Example 7 and Example 7.
  • FIG. 6 is a graph showing the relationship between the storage time and the pressure loss.
  • Honeycomb ceramics structure of the present invention the chemical composition S i0 2 42-56 wt%, A 1 2 0 3 30 ⁇ 45 wt%, the crystal phase consists 12 to 16 weight percent MgO is predominant cordierite
  • the porosity is 55 to 65%
  • the average pore diameter is 15 to 3 O ⁇ m
  • the total area of the pores exposed on the partition wall surface constituting the honeycomb ceramic structure is the total of the partition wall surface. More than 35% of the area.
  • the porosity ranges from 55 to 65%.
  • the porosity is less than 55%, the pressure loss of the exhaust gas increases, which is not preferable.
  • the porosity exceeds 65%, the mechanical strength of the honeycomb structure is significantly reduced, and the honeycomb structure can withstand practical use. Can not do.
  • the average pore diameter is 15 to 30 ⁇ m, and preferably 15 to 2. If the average pore diameter is less than 15 zm, the trapping efficiency increases but the pressure loss increases, which is not preferred.If the average pore diameter exceeds 30 m, the pressure loss is low and good. However, the probability that the fine particles in the exhaust gas will not be collected through the air holes increases. In particular, when the wall thickness of the partition wall of the honeycomb ceramic structure is 300 m or less, the reduction of the collection efficiency becomes remarkable. In addition, if the average pore diameter exceeds 3 When the rate is less than 55%, the initial pressure loss is low, but the pressure loss tends to increase rapidly as the operating time increases.
  • the average pore diameter is more preferably in the range of 15 to 25 zm.
  • the total area of the pores exposed on the surface of the partition wall constituting the honeycomb ceramic structure is 35% or more of the total area of the partition wall surface.
  • the total area of the pores exposed on the partition wall surface is preferably 40% or more of the total area of the partition wall surface, and more preferably 60% or less.
  • the permeability can be 1.5 to 6 m 2 .
  • high trapping efficiency can be achieved with low pressure loss to exhaust gas.
  • the honeycomb ceramic structure of the present invention has a heat treatment temperature between 40 and 800 ° C. Expansion coefficient is zero. May be 5 xl 0- 6 / ° C or less. With such a coefficient of thermal expansion, it exhibits extremely excellent thermal shock resistance, and is unlikely to be damaged even if repeated rapid temperature changes occur.
  • the honeycomb ceramic structure of the present invention has a high collection efficiency as described above, it can be preferably applied to a thin-walled honeycomb structure having a partition wall thickness of 300 m or less.
  • the honeycomb ceramic structure of the present invention having the above-mentioned configuration can be applied very preferably as a diesel particulate filter (DPF) for collecting paticular oil discharged from a diesel engine.
  • DPF diesel particulate filter
  • talc, kaolin, calcined kaolin, alumina, aluminum hydroxide, from among silica, chemical composition S i 0 2 4 2 ⁇ 5 6 wt%, A 1 2 0 3 3 0 ⁇ 4 5 wt%, M g O 12 15 to 25% by weight of graphite as a pore former is added to the raw material for coagulation prepared in a predetermined ratio so as to fall within the range of 12 to 16% by weight.
  • ⁇ ⁇ 5 ⁇ a synthetic resin such as ⁇ Fuwenoru resin; adding L 5 wt%, methyl celluloses, after adding a predetermined amount of a surfactant, kneaded and clay by adding water as appropriate.
  • the honeycomb ceramic structure according to the present invention can be manufactured. Further, the staggered end face sealing of the honeycomb ceramic structure is performed after drying or firing, and is performed by firing the honeycomb structure again, etc.
  • the amount of graphite added to the raw material for co-gelation exceeds 25% by weight, it becomes difficult to perform uniform drying by dielectric drying and microwave drying, and graphite is burned in the firing step. It was necessary to suppress the rapid combustion of graphite by increasing the firing time at ⁇ 1000 ° C. If the heating rate of the graphite in the combustion zone is too high, the graphite will burn rapidly and a large temperature distribution will occur in the honeycomb structure, which may cause cracks. Also, if the graphite remains unburned, it may adversely affect the cordierite-forming reaction at a high temperature of 1200 ° C or more, and there is a risk that the thermal expansion will increase. For this reason, the amount of graphite added must be 25% by weight or less, more preferably 20% by weight or less, when considering industrial mass production. The lower limit of the addition of graphite must be 15% by weight or more in view of porosity and calorific value.
  • a honeycomb structure having a large porosity of 55% or more can be manufactured by adding a predetermined amount of a synthetic resin having a relatively small calorific value during combustion to the graphite. Things.
  • the honeycomb ceramic structure of the present invention in order to increase the total area of the pores exposed on the surface of the honeycomb structure partition wall, it is necessary to increase the porosity and to increase the talc during the cordierite-forming reaction.
  • the talc raw material and the silica raw material are made coarse, the average pore diameter can be increased, but the formed pores do not always appear on the partition wall surface, but only form coarse pores inside the partition walls. This is because coarse particles tend to collect at the center of the partition wall during extrusion molding.
  • the surface of the partition wall can be effectively formed. Pores can be formed, and as a result, The ratio of the total area of the pores exposed on the partition wall surface of the honeycomb structure to the total area of the partition wall surface can be increased to 35% or more.
  • the average particle diameter of the talc raw material is more preferably in the range of 20 to 50 m, and the average particle diameter of the raw material for silicic acid is more preferably in the range of 20 to 60 m.
  • the cordierite-forming raw material and the pore-forming agent shown in Table 1 were mixed in the proportions shown in Table 2, respectively, 2% by weight of methylcellulose and hydroxypropoxylmethylcellulose, and 0.5% by weight of fatty acid stone as a surfactant. % And water were appropriately added to obtain clay.
  • the cell structure was ⁇ 15 O mm x 15 O mm (length)
  • the wall thickness was 300 mm
  • the number of cells was 31 cells /
  • Each type of honeycomb structure having a cm 2 or wall thickness: 430 m and the number of cells: 16 cells / cm 2 was extruded, and water was removed by dielectric drying and hot-air drying.
  • Table 3 shows the physical properties and evaluation results of the obtained honeycomb ceramic structure.
  • Example 6 Batch 1 1 300 31 0.4 26 62 42 65 90 5.3
  • the average pore diameter and porosity of the honeycomb ceramic structure were measured as follows.
  • the average pore diameter and porosity are determined from the pore distribution measured by the mercury intrusion method. Porosity was calculated from the total pore volume.
  • the area ratio of the pores exposed on the partition wall surface was determined by analyzing a photograph of the partition wall surface obtained by SEM observation using an image analysis processor.
  • CTE Measured by differential measurement using quartz as a standard sample.
  • Permeability A part of the partition wall is removed from each honeycomb ceramic structure and processed so that there are no irregularities.
  • the sample is used as a sample. Gas was allowed to flow into the sample at a specific gas pressure. At this time, the permeability of the gas passing through the sample was determined based on the following equation.
  • C is the permeability ( ⁇ m 2 )
  • F is the gas flow rate (cm 3 / s)
  • T is the sample thickness (cm)
  • V is the gas viscosity (dyne s ⁇ s / cm 2 )
  • D is the sample diameter (cm)
  • P is the gas pressure (PSI)
  • Pressure loss the diesel Gasupana one to generate a scan one bets, flowed gas flow 2. 4 Nm 3 / min by mounting the DP F on the downstream side, the combustion gas containing scan one bets at a temperature of about 0.99 ° C to DPF The pressure difference before and after the DPF was determined from the change over time while soot was deposited on the DPF.
  • a gas is generated by a gas oil burner, and a DPF is installed downstream of the gas.
  • a gas flow rate of 2.4 Nm 3 / min and a temperature of about 150 ° C are included.
  • the combustion gas was passed through the DPF, and the DPF collection efficiency was calculated from the ratio of the weight of the gas in the upstream and downstream of the DPF and the gas divided at a constant ratio.
  • FIG. 1 shows an SEM photograph of a rib cross section of the honeycomb ceramic structure of Example 1
  • FIG. 2 shows an SEM photograph of a partition wall surface (film surface) of the honeycomb ceramic structure of Example 1.
  • FIG. 3 shows an SEM photograph of the rib cross section of the honeycomb ceramic structure of Comparative Example 5
  • FIG. 4 shows an SEM photograph of the partition wall surface (film surface) of the honeycomb ceramic structure of Comparative Example 5.
  • FIG. 3 and 4 show the microstructure of the honeycomb structure of Comparative Example 5.
  • FIG. From the photographs of FIGS. 3 and 4, it can be seen that in the rib cross section of Comparative Example 5, very large pores are gathered near the center of the rib due to the coarse silica raw material having an average particle size of 75 ⁇ . It is known that large pores are formed by using a coarse talc raw material or a silica raw material.However, when the honeycomb is extruded, the coarse raw material gathers near the center of the rib, and as a result, large pores are formed in the rib. It occurs only near the center. In the photograph of the membrane surface of Comparative Example 5, the total area of the pores exposed on the partition wall surface was only 20%. In Comparative Example 5, the pressure loss was not so high, but the trapping efficiency was as low as 80% due to the influence of large pores.
  • Example 1 shown in FIGS. 1 and 2 PET, which is a synthetic resin, is used as a pore-forming agent together with graphite in order to increase the porosity.
  • the porosity increased to 63%.
  • the use of synthetic resin increased the porosity of the honeycomb structure and, at the same time, confirmed the effect of increasing the surface porosity, as can be seen from the upper and lower surfaces of the rib cross section in FIG.
  • the area ratio of the surface pores of Example 1 was as high as 45%, and as a result, as shown in Table 3, the permeability was 4.8 m 2 .
  • the initial pressure loss is 65mm Hg was suppressed at a very low level, and the collection efficiency was as high as 95%.
  • FIG. 5 shows starch (corn starch) as a pore-forming agent.
  • Fabric containing 10% by weight and 20% by weight of graphite Comparative Example 7: Batch 6-2
  • fabric containing 10% by weight of synthetic resin (PET) and 20% by weight of graphite Example 7: Batch Fig. 5 is a graph showing the relationship between the weight loss rate (TG) and the calorific value (DTA) of Fig. 12. From Fig.
  • starch when starch is used as a pore-forming agent, starch is thermally decomposed at around 300 ° C to 350 ° C. (Refer to the dotted line of DTA), and the thermal stress causes a break in the firing process.
  • the temperature rises. The calorific value in the area is kept low (See DTA solid line), is possible to generate a cut has been found that there is very little further advantage during the firing process.
  • Figure 6 is a graph showing the relationship between soot placement time and pressure loss.
  • the solid line in FIG. 6 is the result for the honeycomb structure of Example 1
  • the broken line in FIG. 4 is the result for the honeycomb structure of Comparative Example 5.
  • the gas temperature generated by the gas oil gas burner was about 150 ° C, and the gas flow rate was 2.4 Nm 3 / min, and the honeycomb structure of Example 1 and Comparative Example 5 was used. Flowed into the DPF.
  • the honeycomb structure of Example 1 has a large porosity of 63% and a large area ratio of 45%.
  • the honeycomb structure of Comparative Example 5 having a small porosity of 50% and a small area ratio of 20% was used, it can be seen that the pressure loss increased with time.
  • Industrial applicability As described above, according to the present invention, it is possible to provide a honeycomb ceramic structure capable of achieving low pressure loss and high collection efficiency, and a method for manufacturing the same.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Filtering Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

L'invention concerne une structure céramique en nid d'abeille dont la composition chimique en pourcentage pondéral est la suivante: 42 à 56 % de SiO2, 30 à 40 % d'Al2O3 et 12 à 16 % de MgO, et dont la phase de cristal comprend de la cordiérite en tant que phase principale. Cette structure est caractérisée en ce que sa porosité est comprise entre 55 et 65 %, en ce que le diamètre moyen de pores est de l'ordre de 15 à 30 µm, et en ce qu'une zone totale des pores exposés sur la surface des cloisons constituant la structure céramique en nid d'abeille est de 35 % ou davantage par rapport à la surface totale utile des cloisons. L'invention concerne encore un procédé de préparation de cette structure céramique, comprenant les étapes suivantes consistant: à ajouter à des matières premières destinées à une céramique à base de cordiérite, 15 à 25 % en poids de graphite et 5 à 15 % en poids d'une résine synthétique, en tant qu'agents de formation de pores, à pétrir le mélange résultant, à le mettre en forme pour obtenir une structure en nid d'abeille, puis à le sécher et à le cuire. Cette structure céramique en nid d'abeille permet d'obtenir une très grande efficacité de piégeage en même temps qu'une faible perte de pression.
PCT/JP2001/005491 2000-06-30 2001-06-27 Structure ceramique en nid d'abeille et procede de preparation associe Ceased WO2002002479A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US10/312,140 US6818580B2 (en) 2000-06-30 2001-06-27 Honeycomb ceramics structure body and method for producing the same
AU2001267828A AU2001267828A1 (en) 2000-06-30 2001-06-27 Honeycomb ceramic structure and method for preparation thereof
DE60129815T DE60129815T2 (de) 2000-06-30 2001-06-27 Wabenförmige keramische struktur und verfahren zur herstellung derselben
EP01945623A EP1298112B1 (fr) 2000-06-30 2001-06-27 Structure ceramique en nid d'abeille et procede de preparation associe

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2000199801 2000-06-30
JP2000-199801 2000-06-30
JP2001157114 2001-05-25
JP2001-157114 2001-05-25
JP2001187245A JP2003040687A (ja) 2000-06-30 2001-06-20 ハニカムセラミックス構造体とその製造方法
JP2001-187245 2001-06-20

Publications (1)

Publication Number Publication Date
WO2002002479A1 true WO2002002479A1 (fr) 2002-01-10

Family

ID=27343940

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/005491 Ceased WO2002002479A1 (fr) 2000-06-30 2001-06-27 Structure ceramique en nid d'abeille et procede de preparation associe

Country Status (7)

Country Link
US (1) US6818580B2 (fr)
EP (1) EP1298112B1 (fr)
JP (1) JP2003040687A (fr)
CN (1) CN1200755C (fr)
AU (1) AU2001267828A1 (fr)
DE (1) DE60129815T2 (fr)
WO (1) WO2002002479A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1970120A1 (fr) * 2003-02-18 2008-09-17 Toyota Jidosha Kabushiki Kaisha Support pour un filtre catalyseur pour gaz d'échappement
EP1920838A4 (fr) * 2005-08-31 2012-01-25 Ngk Insulators Ltd Structure en nid d abeille et substance catalytique en nid d abeille

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4094824B2 (ja) * 2001-04-04 2008-06-04 日本碍子株式会社 ハニカム型セラミックス質フィルター
US7179316B2 (en) * 2003-06-25 2007-02-20 Corning Incorporated Cordierite filters with reduced pressure drop
JP4805676B2 (ja) * 2003-07-25 2011-11-02 日本碍子株式会社 セラミックス多孔質体及びその透過性能評価方法
US7229597B2 (en) * 2003-08-05 2007-06-12 Basfd Catalysts Llc Catalyzed SCR filter and emission treatment system
WO2005021463A1 (fr) 2003-08-29 2005-03-10 Hitachi Metals, Ltd. Structure ceramique en nid d'abeilles et corps ceramique utilise pour le moulage par extrusion de ladite structure
JP2005095884A (ja) * 2003-08-29 2005-04-14 Hitachi Metals Ltd セラミックハニカム構造体及びセラミックハニカム構造体押出成形用坏土
JP2005298318A (ja) * 2003-11-18 2005-10-27 Hitachi Metals Ltd セラミックハニカム構造体
WO2005068396A1 (fr) * 2004-01-13 2005-07-28 Ngk Insulators, Ltd. Structure en nid d'abeille et son procédé de production
US7897099B2 (en) 2004-01-13 2011-03-01 Ngk Insulators, Ltd. Method for producing honeycomb structure
JP4526276B2 (ja) 2004-02-10 2010-08-18 株式会社キャタラー フィルタ触媒およびその触媒層の解析方法
US20080092499A1 (en) * 2004-09-14 2008-04-24 Ngk Insulators Ltd Porous Honeycomb Filter
JP4361449B2 (ja) 2004-09-24 2009-11-11 日本碍子株式会社 コーディエライト質ハニカム構造体の製造方法
KR100820619B1 (ko) * 2004-12-28 2008-04-08 이비덴 가부시키가이샤 필터 및 필터 집합체
JP4434050B2 (ja) 2005-03-17 2010-03-17 日本碍子株式会社 ハニカム構造体の製造方法
JP2008545612A (ja) * 2005-05-31 2008-12-18 コーニング インコーポレイテッド 細孔形成剤の組合せを含有するチタン酸アルミニウムセラミック形成バッチ混合物および未焼成体、および同混合物および未焼成体の製造および焼成方法
JP4476896B2 (ja) 2005-08-12 2010-06-09 日本碍子株式会社 多孔質セラミックス構造体の製造方法
JP2007045686A (ja) 2005-08-12 2007-02-22 Ngk Insulators Ltd 多孔質セラミックス構造体の製造方法
US7754160B2 (en) * 2005-08-31 2010-07-13 Ngk Insulators Honeycomb catalytic body and process for manufacturing honeycomb catalytic body
US8609581B2 (en) * 2005-08-31 2013-12-17 Ngk Insulators, Ltd. Honeycomb structure and honeycomb catalytic body
WO2007026806A1 (fr) * 2005-08-31 2007-03-08 Ngk Insulators, Ltd. Corps de catalyseur en nid d’abeille et son procédé de production
EP1920839A4 (fr) * 2005-08-31 2012-01-25 Ngk Insulators Ltd Structure de catalyseur en nid d'abeille, support prérêvetu permettant de produire une structure de catalyseur en nid d'abeille, et procédé de production de la structure de catalyseur en nid d'abeille
EP1946840B1 (fr) * 2005-11-04 2019-08-21 NGK Insulators, Ltd. Structure en nid d 'abeilles et catalyseur en nid d 'abeilles
US7541303B2 (en) * 2005-12-21 2009-06-02 Corning Incorporated High porosity cordierite ceramic honeycomb article and method
EP1826370A1 (fr) * 2006-02-23 2007-08-29 Ibiden Co., Ltd. Structure en nid d'abeille
JPWO2007097056A1 (ja) * 2006-02-23 2009-07-09 イビデン株式会社 ハニカム構造体および排ガス浄化装置
CN104529422B (zh) * 2006-03-07 2018-11-16 日本碍子株式会社 陶瓷结构体的制造方法
JP5073303B2 (ja) * 2006-03-24 2012-11-14 日本碍子株式会社 触媒コンバータ及び触媒コンバータの製造方法
JP2007269512A (ja) * 2006-03-30 2007-10-18 Denso Corp コーディエライトハニカム構造体及びその製造方法、並びにそれに用いるタルク
US7648548B2 (en) * 2006-05-10 2010-01-19 Corning Incorporated High porosity cordierite composition
US7923093B2 (en) * 2006-06-30 2011-04-12 Corning Incorporated High porosity filters for 4-way exhaust gas treatment
US7596885B2 (en) 2006-07-28 2009-10-06 Corning Incorporated Microwave drying of ceramic structures
US7648550B2 (en) * 2006-08-25 2010-01-19 Corning Incorporated Narrow pore size distribution cordierite ceramic honeycomb articles and methods for manufacturing same
WO2008026675A1 (fr) 2006-08-30 2008-03-06 Hitachi Metals, Ltd. Filtre céramique en nid d'abeilles
JP5537807B2 (ja) 2006-08-31 2014-07-02 日本碍子株式会社 ハニカム構造体の製造方法
WO2008047558A1 (fr) * 2006-09-28 2008-04-24 Hitachi Metals, Ltd. structure céramique en nid d'abeille et son procédé de fabrication
JP5453809B2 (ja) * 2006-09-28 2014-03-26 日立金属株式会社 セラミックハニカムフィルタの製造方法
WO2008066167A1 (fr) * 2006-11-30 2008-06-05 Hitachi Metals, Ltd. Filtre céramique en nid d'abeilles et son procédé de fabrication
DE102006057280A1 (de) * 2006-12-05 2008-06-12 Robert Bosch Gmbh Durch Extrudieren hergestelltes Filterelement zur Filterung von Abgasen einer Diesel-Brennkraftmaschine
CN100432026C (zh) * 2006-12-26 2008-11-12 王汉明 一种蜂窝陶瓷的制作方法
CN101754939A (zh) * 2007-05-31 2010-06-23 康宁股份有限公司 形成钛酸铝陶瓷的批料混合物和具有成孔剂的生坯
US8242038B2 (en) * 2007-10-31 2012-08-14 Corning Incorporated Low thermal expansion high strength honeycomb cement and method therefor
US8361592B2 (en) * 2007-12-03 2013-01-29 Ngk Insulators, Ltd. Honeycomb structure, honeycomb catalytic body and manufacturing method of the same
JP5368776B2 (ja) * 2007-12-03 2013-12-18 日本碍子株式会社 ハニカム構造体
US8591623B2 (en) 2008-02-29 2013-11-26 Corning Incorporated Honeycomb manufacturing method using ground nut shells and honeycomb body produced thereby
JP4571990B2 (ja) 2008-03-31 2010-10-27 日本碍子株式会社 ハニカム構造体の製造方法
JP2009262125A (ja) * 2008-03-31 2009-11-12 Denso Corp 多孔質ハニカム構造体及びその製造方法
US20090297764A1 (en) * 2008-05-30 2009-12-03 Douglas Munroe Beall Stablized Low-Microcracked Ceramic Honeycombs And Methods Thereof
US8894917B2 (en) * 2008-05-30 2014-11-25 Corning Incorporated High porosity cordierite honeycomb articles
US20100029462A1 (en) * 2008-08-01 2010-02-04 Derosa Michael Edward Ceramic precursor having improved manufacturability
JP5808248B2 (ja) * 2008-08-28 2015-11-10 コーニング インコーポレイテッド ハニカム基板における細孔径分布の管理
JP5452943B2 (ja) * 2009-02-02 2014-03-26 日本碍子株式会社 ハニカム構造体、及びハニカム触媒体
EP2415511B1 (fr) * 2009-03-31 2013-09-25 Hitachi Metals, Ltd. Structure céramique en nid d'abeille et son procédé de fabrication
KR101770654B1 (ko) 2009-09-04 2017-08-23 히타치 긴조쿠 가부시키가이샤 세라믹 허니컴 구조체 및 그 제조 방법
US8636821B2 (en) 2010-02-22 2014-01-28 Hitachi Metals, Ltd. Ceramic honeycomb structure and its production method
US20110293882A1 (en) * 2010-05-27 2011-12-01 Christopher Lane Kerr Cordierite compositions for improved extrusion process quality
US9856177B2 (en) 2010-05-28 2018-01-02 Corning Incorporated Cordierite porous ceramic honeycomb articles
US9334191B2 (en) 2010-05-28 2016-05-10 Corning Incorporated Methods for forming ceramic honeycomb articles
US8999224B2 (en) * 2010-11-30 2015-04-07 Corning Incorporated Cordierite porous ceramic honeycomb articles with delayed microcrack evolution
JP5643692B2 (ja) * 2011-03-25 2014-12-17 日本碍子株式会社 ハニカムフィルタ及びその製造方法
JP5486539B2 (ja) * 2011-03-30 2014-05-07 日本碍子株式会社 ハニカム構造体及びその製造方法
US9346043B2 (en) * 2012-03-06 2016-05-24 Ngk Insulators, Ltd. Honeycomb structure and honeycomb catalyst
JP5937381B2 (ja) * 2012-03-06 2016-06-22 日本碍子株式会社 ハニカム構造体
DE112013004474T5 (de) * 2012-11-30 2015-05-28 Dow Global Technologies Llc Filtration der Abgase von Benzinmotoren mit Kraftstoffdirekteinspritzung mit Wabenfiltern mit nadelförmigem Mullit
JP5667663B2 (ja) * 2013-06-24 2015-02-12 日本碍子株式会社 ハニカム構造体
WO2015046012A1 (fr) 2013-09-24 2015-04-02 日立金属株式会社 Structure céramique en nid d'abeilles et son procédé de production
US10072543B2 (en) 2015-03-24 2018-09-11 Hitachi Metals, Ltd. Ceramic honeycomb structure and its production method
CN107250084B (zh) 2015-03-24 2020-10-09 日立金属株式会社 陶瓷蜂窝结构体
JP6464909B2 (ja) * 2015-04-23 2019-02-06 株式会社デンソー ハニカム構造体
EP3386607A1 (fr) 2015-12-09 2018-10-17 Corning Incorporated Composition de céramique poreuse, filtre et articles
JP2019515859A (ja) 2016-03-17 2019-06-13 コーニング インコーポレイテッド 高空隙率のセラミックハニカム構造及び製造方法
JP7094193B2 (ja) * 2017-11-24 2022-07-01 日本碍子株式会社 ハニカムフィルタ
CN108160032A (zh) * 2017-12-31 2018-06-15 安徽万方织染有限公司 一种印染废水用高强度高吸附活性吸附剂的制备工艺
JP2021535068A (ja) 2018-08-31 2021-12-16 コーニング インコーポレイテッド コーディエライト‐インディアライト‐擬板チタン石構造セラミック体、バッチ組成物混合物、及びこれらからセラミック体を製造する方法
EP3880342B1 (fr) 2018-11-16 2024-06-12 Corning Incorporated Corps en céramique contenant de la cordiérite, mélanges de compositions en lots et procédés de fabrication de corps en céramique contenant de la cordiérite
JP7002503B2 (ja) * 2019-07-29 2022-02-04 株式会社Soken 排ガス浄化フィルタ
JP7002504B2 (ja) * 2019-07-29 2022-02-04 株式会社Soken 排ガス浄化フィルタ
EP4204383A1 (fr) 2020-08-31 2023-07-05 Corning Incorporated Procédés de cuisson rapide à haute teneur en oxygène pour la fabrication de céramiques
KR102451008B1 (ko) * 2021-12-24 2022-10-06 (주) 세라컴 내부 결함이 개선된 디젤 입자 필터 및 그 제조방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08323123A (ja) * 1995-05-31 1996-12-10 Matsushita Electric Ind Co Ltd 排ガスフィルタおよびその製造方法
EP0761279A2 (fr) * 1995-08-22 1997-03-12 Denki Kagaku Kogyo Kabushiki Kaisha Structure à nid d'abeilles, procédé pour sa préparation, son utilisation et appareil de chauffage

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0738930B2 (ja) 1990-03-30 1995-05-01 日本碍子株式会社 多孔質セラミックフィルタの製法
US5183608A (en) * 1992-01-03 1993-02-02 Corning Incorporated Method of making diesel particulate filters
JP2726616B2 (ja) 1993-12-15 1998-03-11 日本碍子株式会社 多孔質セラミックハニカムフィルタ
JP3806975B2 (ja) * 1995-07-12 2006-08-09 株式会社デンソー ハニカム構造体の製造方法
JPH11333293A (ja) 1998-03-27 1999-12-07 Denso Corp ハニカム構造体及びその製造方法
JP2000001365A (ja) * 1998-04-16 2000-01-07 Denso Corp ハニカム構造体及びその製造方法
DE19917081B4 (de) * 1998-04-16 2012-06-06 Denso Corporation Wabenförmige Struktur und Verfahren zu ihrer Herstellung
JP2000225340A (ja) * 1998-11-30 2000-08-15 Denso Corp ハニカム構造体
JP3727550B2 (ja) * 2001-05-30 2005-12-14 株式会社デンソー 排ガス浄化フィルタ及びその製造方法
JP4007058B2 (ja) * 2001-08-06 2007-11-14 株式会社デンソー 排ガス浄化フィルタ
EP1719882B1 (fr) * 2001-12-03 2009-08-19 Hitachi Metals, Ltd. Filtre céramique en nid d'abeilles
JP2003277162A (ja) * 2002-01-21 2003-10-02 Ngk Insulators Ltd 多孔質ハニカム構造体、その用途及びその製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08323123A (ja) * 1995-05-31 1996-12-10 Matsushita Electric Ind Co Ltd 排ガスフィルタおよびその製造方法
EP0761279A2 (fr) * 1995-08-22 1997-03-12 Denki Kagaku Kogyo Kabushiki Kaisha Structure à nid d'abeilles, procédé pour sa préparation, son utilisation et appareil de chauffage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1298112A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1970120A1 (fr) * 2003-02-18 2008-09-17 Toyota Jidosha Kabushiki Kaisha Support pour un filtre catalyseur pour gaz d'échappement
EP1920838A4 (fr) * 2005-08-31 2012-01-25 Ngk Insulators Ltd Structure en nid d abeille et substance catalytique en nid d abeille

Also Published As

Publication number Publication date
DE60129815T2 (de) 2008-04-24
US20030166450A1 (en) 2003-09-04
DE60129815D1 (de) 2007-09-20
EP1298112B1 (fr) 2007-08-08
CN1200755C (zh) 2005-05-11
CN1447781A (zh) 2003-10-08
AU2001267828A1 (en) 2002-01-14
JP2003040687A (ja) 2003-02-13
EP1298112A4 (fr) 2005-06-29
US6818580B2 (en) 2004-11-16
EP1298112A1 (fr) 2003-04-02

Similar Documents

Publication Publication Date Title
WO2002002479A1 (fr) Structure ceramique en nid d'abeille et procede de preparation associe
US7208108B2 (en) Method for producing porous ceramic article
JP5199111B2 (ja) 細孔径分布の狭いコージエライトセラミックハニカム物品およびその製造方法
JP4094824B2 (ja) ハニカム型セラミックス質フィルター
JP2007525612A (ja) 圧力損失が低減された菫青石フィルタ
JP2005530616A (ja) Ｄｐｆ用途向けのケイ酸アルミニウムマグネシウム構造体
JPH05330943A (ja) ディーゼル粒子フィルターとして好適な多孔質セラミックの製造方法
WO2002041972A1 (fr) Filtre alveolaire poreux et procede de fabrication
JP2010501467A (ja) 低背圧の多孔質コージエライトセラミックハニカム物品およびその製造方法
WO2005030364A1 (fr) Filtre ceramique en nid d'abeilles et son procede de production, et materiau d'obturation pour filtre ceramique en nid d'abeilles
JP4750343B2 (ja) 多孔質ハニカム構造体の製造方法、及びハニカム成形体
JP2002355511A (ja) 排ガス浄化フィルタ及びその製造方法
JP2002357114A (ja) 排ガス浄化フィルタ及びその製造方法
JP4495152B2 (ja) ハニカム構造体及びその製造方法
JP4358662B2 (ja) コーディエライト質ハニカム構造体の製造方法
US20090267273A1 (en) Process for producing honeycomb structure
WO2004060830A1 (fr) Procede de cuisson d'une structure en nid d'abeille de ceramique
JP5351678B2 (ja) ハニカム構造体
JP2009143763A (ja) 炭化珪素質多孔体
JP2002326881A (ja) 多孔質セラミックスの製造方法
JP2007045686A (ja) 多孔質セラミックス構造体の製造方法
JP6284002B2 (ja) セラミックハニカム構造体の製造方法
JP4997090B2 (ja) 多孔質焼成体及びその製造方法
WO2006046542A1 (fr) Procédé servant à produire une structure en nid d'abeilles et structure en nid d'abeilles
CN116892434A (zh) 蜂窝过滤器

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2001945623

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 10312140

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 018144047

Country of ref document: CN

WWP Wipo information: published in national office

Ref document number: 2001945623

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWG Wipo information: grant in national office

Ref document number: 2001945623

Country of ref document: EP